Enhanced DiffServ by In-band Signaling
draft-han-tsvwg-enhanced-diffserv-00

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TSVWG Working Group                                               L. Han
Internet-Draft                                                     Y. Qu
Intended status: Informational                                     R. Li
Expires: May 7, 2020                              Futurewei Technologies
                                                        November 4, 2019

                 Enhanced DiffServ by In-band Signaling
                  draft-han-tsvwg-enhanced-diffserv-00

Abstract

   There are real-time applications requiring deterministic services in
   terms of bandwidth and latency in various industries, such as network
   based AR/VR (Augmented Reality and Virtual Reality), industrial
   internet.  This document proposes a solution which enhances DiffServ
   in IPv6 to provide end to end bandwidth guaranteed service and
   latency guaranteed service.

Status of This Memo

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   This Internet-Draft will expire on May 7, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of
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   include Simplified BSD License text as described in Section 4.e of

Han, et al.                Expires May 7, 2020                  [Page 1]
Internet-Draft              Enhanced DiffServ              November 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DiffServ and IntServ  . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Differentiated Services . . . . . . . . . . . . . . . . .   4
     3.2.  Integrated Services . . . . . . . . . . . . . . . . . . .   5
   4.  In-band Signaling . . . . . . . . . . . . . . . . . . . . . .   5
   5.  Design Targets  . . . . . . . . . . . . . . . . . . . . . . .   5
   6.  Processing Procedure  . . . . . . . . . . . . . . . . . . . .   6
     6.1.  Introduction  . . . . . . . . . . . . . . . . . . . . . .   6
     6.2.  The purpose of in-band signaling  . . . . . . . . . . . .   7
     6.3.  The info carried in in-band signaling . . . . . . . . . .   7
     6.4.  Admission process with in-band signaling  . . . . . . . .   8
     6.5.  User traffic classification and New DSCP class  . . . . .   8
     6.6.  User traffic conformity checking  . . . . . . . . . . . .   9
     6.7.  Queuing and Scheduling Consideration  . . . . . . . . . .   9
     6.8.  Class Based Traffic Shaper  . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  13
   Appendix B.  Testing Results  . . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   [RFC8557][RFC8578] identifies some use cases from different
   industries which have a common need for "deterministic flows".  Such
   flows require guaranteed bandwidth and bounded latency.

   This document proposes to use in-band signaling together with
   DiffServ to provide Latency Guaranteed Service and Bandwidth
   Guaranteed Service.  Network traffic is classified according to
   application requirements and resources such as bandwidth and buffer
   are dedicated to provide a reliable and scalable service, while
   unused reserved resources could be used by best effort traffic.

   The solution is compatible with existing Quality-of-Service (QoS)
   mechanism as long as there is enough network resources, and is not
   restricted to network topologies.  Resource Reservation is done by